CN219382447U

CN219382447U - Front supporting leg structure for telescopic trailer

Info

Publication number: CN219382447U
Application number: CN202320612845.0U
Authority: CN
Inventors: 项国强
Original assignee: Shandong Xinfengyuan Automobile Manufacturing Co ltd
Current assignee: Shandong Xinfengyuan Automobile Manufacturing Co ltd
Priority date: 2023-03-22
Filing date: 2023-03-22
Publication date: 2023-07-21
Anticipated expiration: 2033-03-22

Abstract

The utility model discloses a front supporting leg structure for a telescopic trailer, which comprises a guide cylinder and is characterized in that: the gear box is fixedly connected with the guide cylinder, the bearing plate is fixedly connected in the guide cylinder, an output shaft of the gear box penetrates through the guide cylinder, the small bevel gear is fixedly connected with the output shaft of the gear box, the small bevel gear is fixedly connected with the inner ring of the first ball plane thrust bearing, the outer ring of the first ball plane thrust bearing is fixedly connected with the guide cylinder, the small bevel gear is meshed with the large bevel gear, and the large bevel gear is fixedly connected with the inner ring of the second ball plane thrust bearing. The utility model relates to the field of supporting equipment, in particular to a front supporting leg structure for a telescopic trailer. The front supporting leg structure for the telescopic trailer is beneficial to realizing the support of the semitrailer.

Description

Front supporting leg structure for telescopic trailer

Technical Field

The utility model relates to the field of supporting equipment, in particular to a front supporting leg structure for a telescopic trailer.

Background

A semitrailer is a heavy transport vehicle that is connected to the semitrailer head by means of a kingpin, and the semitrailer must be braced up by using a leg when the semitrailer is not connected to the kingpin.

As shown in fig. 8, in the conventional front leg structure, when in use, by swinging the crank handle, under the action of the gearbox, the bevel pinion and the bevel gear with large umbrella are realized to rotate, because the end face of the bevel pinion contacts the guide cylinder, the bevel pinion has thrust to one side close to the guide cylinder when rotating, so that the joint of the bevel pinion and the guide cylinder is severely worn, because the bevel pinion with large umbrella is connected with the bearing plate, the bevel pinion has downward thrust to one side close to the bearing plate when rotating, so that the bearing plate is severely worn, and because of the existence of the two thrust, the bevel pinion is particularly laborious and even does not shake when in hand operation.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a front supporting leg structure for a telescopic trailer, which is beneficial to realizing the support of a semi-trailer.

The utility model adopts the following technical scheme to realize the aim of the utility model:

the utility model provides a scalable for hanging car front leg structure, includes the guide cylinder, characterized by: the gear box is fixedly connected with the guide cylinder, the bearing plate is fixedly connected in the guide cylinder, an output shaft of the gear box penetrates through the guide cylinder, the small bevel gear is fixedly connected with the inner ring of the first ball plane thrust bearing, the outer ring of the first ball plane thrust bearing is fixedly connected with the guide cylinder, the small bevel gear is meshed with the large bevel gear, the large bevel gear is fixedly connected with the inner ring of the second ball plane thrust bearing, the bearing plate is fixedly connected with the outer ring of the second ball plane thrust bearing, the large bevel gear is fixedly connected with the screw rod, the screw rod is in threaded connection with the screw rod tube plate, the screw rod is fixedly connected with the inner ring of the roller plane thrust bearing, the bearing plate is fixedly connected with the outer ring of the roller plane thrust bearing, the screw rod tube plate is fixedly connected with the support tube, and the support tube is arranged in the guide cylinder and is matched with the guide cylinder.

As a further limitation of the technical scheme, the supporting cylinder bearing is connected with a round shaft, and the round shaft is fixedly connected with the supporting leg base assembly.

As a further limitation of the technical scheme, the input shaft of the gearbox is provided with a round hole.

As a further limitation of the technical scheme, the hand crank is fixedly connected with a U plate, and the U plate is provided with symmetrical placing grooves and straight-mouth grooves which are respectively communicated with the corresponding placing grooves.

As a further limitation of the present solution, the screw matches the placement groove.

As a further limitation of the present technical solution, the screw matches the straight slot.

As a further limitation of the present technical solution, the screw rod matches the round hole.

As a further limitation of the present technical solution, the screw is threaded with a coupling nut.

As a further limitation of the present solution, the input shaft of the gearbox is matched to the U-plate.

As a further limitation of the technical scheme, the guide cylinder is fixedly connected with the mounting plate.

Compared with the prior art, the utility model has the advantages and positive effects that:

(1) The end face contact guide cylinder of the bevel pinion is changed into the bevel pinion which is connected with the guide cylinder through a ball plane thrust bearing, the contact bearing plate of the bevel pinion is changed into the bevel pinion which is connected with the bearing plate through a ball plane thrust bearing II, the friction between the surfaces is changed into rolling friction, the friction force is reduced, the labor is saved during hand shaking, and the service life is longer;

(2) The prior screw is connected with the bearing plate through the ball plane thrust bearing, and the screw is connected with the bearing plate through the roller plane thrust bearing, so that the bearing force of the roller plane thrust bearing is far greater than that of the ball plane thrust bearing, and the service life and the bearing load can be prolonged.

The front supporting leg structure for the telescopic trailer is beneficial to realizing the support of the semitrailer.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

FIG. 2 is a schematic view of the structure of the hand crank, U plate, placement groove and straight slot of the present utility model.

Fig. 3 is a schematic view of the structure of the elements in the guide cylinder of the present utility model.

Fig. 4 is a schematic view of the related elements of the support cylinder of the present utility model, partially cut away.

FIG. 5 is a schematic diagram of the ball and roller planar thrust bearings of the present utility model.

Fig. 6 is a front view of a partial element of the present utility model.

Fig. 7 is a schematic diagram of the overall structure of the present utility model.

Fig. 8 is a partially schematic illustration of a prior art front leg structure.

Fig. 9 is a schematic view of the structure of the portion of the present utility model corresponding to fig. 8.

Fig. 10 is a partial component cutaway view of the present utility model.

In the figure: 1. the hand crank, 2, gearbox, 3, guiding tube, 4, mounting plate, 5, round axle, 6, supporting tube, 7, landing leg base assembly, 8, U board, 9, standing groove, 10, straight mouth groove, 11, screw rod, 12, round hole, 13, nut, 14, bearing plate, 15, ball plane thrust bearing one, 16, small umbrella bevel gear, 17, big umbrella bevel gear, 18, screw tube board, 19, screw, 20, ball plane thrust bearing two, 21, roller plane thrust bearing.

Detailed Description

The following detailed description of embodiments of the utility model is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the utility model is not limited to the specific embodiments.

The utility model comprises a guide cylinder 3, wherein the guide cylinder 3 is fixedly connected with a gearbox 2, a bearing plate 14 is fixedly connected in the guide cylinder 3, an output shaft of the gearbox 2 penetrates through the guide cylinder 3, an output shaft of the gearbox 2 is fixedly connected with a bevel pinion 16, the bevel pinion 16 is fixedly connected with an inner ring of a ball plane thrust bearing I15, an outer ring of the ball plane thrust bearing I15 is fixedly connected with the guide cylinder 3, the bevel pinion 16 is meshed with a bevel pinion 17, the bevel pinion 17 is fixedly connected with an inner ring of a ball plane thrust bearing II 20, the bearing plate 14 is fixedly connected with an outer ring of the ball plane thrust bearing II 20, the bevel pinion 17 is fixedly connected with a screw 19, the screw 19 is in threaded connection with a threaded cylinder plate 18, the screw 19 is fixedly connected with an inner ring of a roller plane thrust bearing 21, the bearing plate 14 is fixedly connected with an outer ring of the roller plane thrust bearing 21, the threaded cylinder plate 18 is fixedly connected with a supporting cylinder 6, and the supporting cylinder 6 is arranged in the guide cylinder 3, and the supporting cylinder 6 is matched with the guide cylinder 3.

The support cylinder 6 is in bearing connection with the round shaft 5, and the round shaft 5 is fixedly connected with the supporting leg base assembly 7.

The input shaft of the gearbox 2 is provided with a circular hole 12.

The hand crank 1 is fixedly connected with a U plate 8, the U plate 8 is provided with symmetrical placing grooves 9 and straight-mouth grooves 10, and the symmetrical straight-mouth grooves 10 are respectively communicated with the corresponding placing grooves 9.

The screw 11 matches the placement groove 9.

The screw 11 is matched with the straight slot 10.

The screw 11 is matched with the round hole 12.

The screw 11 is screwed with a nut 13.

The input shaft of the gearbox 2 is matched to the U-plate 8.

The guide cylinder 3 is fixedly connected with the mounting plate 4.

The internal structure and the working principle of the gearbox 2 are well known to those skilled in the art, and are not described herein.

The workflow of this embodiment is: the input shaft of the gearbox 2 is placed in the U plate 8, the round hole 12 is aligned with the placement groove 9, the screw 11 is used for penetrating through the placement groove 9 and the round hole 12, the nut 13 is screwed on, the U plate 8 is moved, the screw 11 is located at the end of the straight-mouth groove 10, the nut 13 is screwed on, and the screw 11 and the nut 13 clamp the U plate 8 and the input shaft of the gearbox 2.

The landing leg base assembly 7 contacts the ground, the hand crank 1 is swung, the hand crank 1 drives the bevel gear 16 of the small umbrella and the first ball plane thrust bearing 15 to rotate through the gearbox 2, the bevel gear 16 of the small umbrella drives the bevel gear 17 of the large umbrella, the second ball plane thrust bearing 20, the roller plane thrust bearing 21 and the screw 19 to rotate, the screw 19 rotates and moves simultaneously under the auxiliary effect of the threaded barrel plate 18, the screw 19 drives the bearing plate 14 to move, and the bearing plate 14 drives the guide barrel 3 to move along the supporting barrel 6, so that the guide barrel 3 contacts the semitrailer, and the supporting is realized.

When the guide cylinder 3 contacts the semitrailer, the gravity force of the semitrailer and the goods is borne, and the gravity force is large and is mainly borne on the bearing plate 14. The roller plane thrust bearing 21 has much greater bearing capacity than the ball plane thrust bearing, which increases service life and load carrying capacity.

The above disclosure is only one specific embodiment of the present utility model, but the present utility model is not limited thereto, and any changes that can be thought by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. The utility model provides a scalable for trailer landing leg structure, includes guide cylinder (3), characterized by:

the guide cylinder (3) is fixedly connected with the gearbox (2), and the guide cylinder (3) is internally fixedly connected with the bearing plate (14);

an output shaft of the gearbox (2) penetrates through the guide cylinder (3), an output shaft of the gearbox (2) is fixedly connected with a bevel pinion (16), the bevel pinion (16) is fixedly connected with an inner ring of a first ball plane thrust bearing (15), and an outer ring of the first ball plane thrust bearing (15) is fixedly connected with the guide cylinder (3);

the small bevel gear (16) is meshed with the large bevel gear (17), the large bevel gear (17) is fixedly connected with the inner ring of the ball plane thrust bearing II (20), and the bearing plate (14) is fixedly connected with the outer ring of the ball plane thrust bearing II (20);

the large bevel gear (17) is fixedly connected with a screw rod (19), and the screw rod (19) is in threaded connection with a threaded barrel plate (18);

the spiral screw (19) is fixedly connected with the inner ring of the roller plane thrust bearing (21), and the bearing plate (14) is fixedly connected with the outer ring of the roller plane thrust bearing (21);

the thread cylinder plate (18) is fixedly connected with the supporting cylinder (6);

the support cylinder (6) is arranged in the guide cylinder (3), and the support cylinder (6) is matched with the guide cylinder (3).

2. The front leg structure for telescopic hanging vehicle according to claim 1, wherein: the support cylinder (6) is connected with the round shaft (5) through a bearing, and the round shaft (5) is fixedly connected with the supporting leg base assembly (7).

3. The front leg structure for telescopic hanging vehicle according to claim 2, wherein: the input shaft of the gearbox (2) is provided with a round hole (12).

4. A front leg structure for a retractable trailer according to claim 3, characterized in that: the hand crank (1) is fixedly connected with the U plate (8), the U plate (8) is provided with symmetrical placing grooves (9) and straight-mouth grooves (10), and the symmetrical straight-mouth grooves (10) are respectively communicated with the corresponding placing grooves (9).

5. The front leg structure for telescopic hanging vehicle according to claim 4, wherein: the screw (11) is matched with the placing groove (9).

6. The front leg structure for telescopic hanging vehicle according to claim 5, wherein: the screw (11) is matched with the straight slot (10).

7. The front leg structure for telescopic hanging vehicle according to claim 5, wherein: the screw (11) is matched with the round hole (12).

8. The front leg structure for telescopic hanging vehicle according to claim 5, wherein: the screw rod (11) is connected with the nut (13) through threads.

9. The front leg structure for telescopic hanging vehicle according to claim 4, wherein: the input shaft of the gearbox (2) is matched with the U-shaped plate (8).

10. The front leg structure for telescopic hanging vehicle according to claim 1, wherein: the guide cylinder (3) is fixedly connected with the mounting plate (4).